mirror of
https://github.com/davea42/libdwarf-code.git
synced 2025-10-23 01:37:53 +08:00
2d88cea086
oss.sgi.com from copyright notices. libdwarf/LIBDWARFCOPYRIGHT has an original example of copyright and explains the change.
246 lines
8.1 KiB
C
246 lines
8.1 KiB
C
/*
|
|
|
|
Copyright (C) 2000,2004 Silicon Graphics, Inc. All Rights Reserved.
|
|
Portions Copyright 2011 David Anderson. All Rights Reserved.
|
|
|
|
This program is free software; you can redistribute it and/or modify it
|
|
under the terms of version 2.1 of the GNU Lesser General Public License
|
|
as published by the Free Software Foundation.
|
|
|
|
This program is distributed in the hope that it would be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
Further, this software is distributed without any warranty that it is
|
|
free of the rightful claim of any third person regarding infringement
|
|
or the like. Any license provided herein, whether implied or
|
|
otherwise, applies only to this software file. Patent licenses, if
|
|
any, provided herein do not apply to combinations of this program with
|
|
other software, or any other product whatsoever.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this program; if not, write the Free Software
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston MA 02110-1301,
|
|
USA.
|
|
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "libdwarfdefs.h"
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
/*#include <elfaccess.h> */
|
|
#include "pro_incl.h"
|
|
#include "pro_section.h"
|
|
#include "pro_reloc.h"
|
|
#include "pro_reloc_symbolic.h"
|
|
|
|
/* Return DW_DLV_ERROR on malloc error.
|
|
Return DW_DLV_OK otherwise */
|
|
|
|
int
|
|
_dwarf_pro_reloc_name_symbolic(Dwarf_P_Debug dbg,
|
|
int base_sec_index,
|
|
Dwarf_Unsigned offset, /* r_offset of reloc */
|
|
Dwarf_Unsigned symidx,
|
|
enum Dwarf_Rel_Type type,
|
|
int reltarget_length)
|
|
{
|
|
/* get a slot, fill in the slot entry */
|
|
void *relrec_to_fill = 0;
|
|
int res = 0;
|
|
struct Dwarf_Relocation_Data_s *slotp;
|
|
|
|
res = _dwarf_pro_reloc_get_a_slot(dbg, base_sec_index,
|
|
&relrec_to_fill);
|
|
if (res != DW_DLV_OK)
|
|
return res;
|
|
slotp = (struct Dwarf_Relocation_Data_s *) relrec_to_fill;
|
|
slotp->drd_type = type;
|
|
slotp->drd_length = reltarget_length;
|
|
slotp->drd_offset = offset;
|
|
slotp->drd_symbol_index = symidx;
|
|
return DW_DLV_OK;
|
|
}
|
|
|
|
|
|
|
|
/* Return DW_DLV_ERROR on malloc error.
|
|
Return DW_DLV_OK otherwise */
|
|
int
|
|
_dwarf_pro_reloc_length_symbolic(Dwarf_P_Debug dbg,
|
|
int base_sec_index,
|
|
Dwarf_Unsigned offset, /* r_offset of reloc */
|
|
Dwarf_Unsigned start_symidx,
|
|
Dwarf_Unsigned end_symidx,
|
|
enum Dwarf_Rel_Type type,
|
|
int reltarget_length)
|
|
{
|
|
/* get a slot, fill in the slot entry */
|
|
void *relrec_to_fill = 0;
|
|
int res = 0;
|
|
struct Dwarf_Relocation_Data_s *slotp1 = 0;
|
|
struct Dwarf_Relocation_Data_s *slotp2 = 0;
|
|
|
|
res = _dwarf_pro_reloc_get_a_slot(dbg, base_sec_index,
|
|
&relrec_to_fill);
|
|
if (res != DW_DLV_OK)
|
|
return res;
|
|
slotp1 = (struct Dwarf_Relocation_Data_s *) relrec_to_fill;
|
|
res = _dwarf_pro_reloc_get_a_slot(dbg, base_sec_index,
|
|
&relrec_to_fill);
|
|
if (res != DW_DLV_OK)
|
|
return res;
|
|
slotp2 = (struct Dwarf_Relocation_Data_s *) relrec_to_fill;
|
|
|
|
/* ASSERT: type == dwarf_drt_first_of_length_type_pair */
|
|
slotp1->drd_type = type;
|
|
slotp1->drd_length = reltarget_length;
|
|
slotp1->drd_offset = offset;
|
|
slotp1->drd_symbol_index = start_symidx;
|
|
|
|
slotp2->drd_type = dwarf_drt_second_of_length_pair;
|
|
slotp2->drd_length = reltarget_length;
|
|
slotp2->drd_offset = offset;
|
|
slotp2->drd_symbol_index = end_symidx;
|
|
return DW_DLV_OK;
|
|
}
|
|
|
|
/* Reset whatever fields of Dwarf_P_Per_Reloc_Sect_s
|
|
we must to allow adding a fresh new single
|
|
block easily (block consolidation use only). */
|
|
static void
|
|
_dwarf_reset_reloc_sect_info(struct Dwarf_P_Per_Reloc_Sect_s *pblk,
|
|
unsigned long ct)
|
|
{
|
|
|
|
|
|
/* Do not zero pr_sect_num_of_reloc_sect */
|
|
pblk->pr_reloc_total_count = 0;
|
|
pblk->pr_first_block = 0;
|
|
pblk->pr_last_block = 0;
|
|
pblk->pr_block_count = 0;
|
|
pblk->pr_slots_per_block_to_alloc = ct;
|
|
}
|
|
|
|
/* Ensure each stream is a single buffer and
|
|
add that single buffer to the set of stream buffers.
|
|
|
|
By creating a new buffer and copying if necessary.
|
|
(If > 1 block, reduce to 1 block)
|
|
|
|
Free the input set of buffers if we consolidate.
|
|
|
|
We pass back *new_sec_count as zero because we
|
|
are not creating normal sections for a .o, but
|
|
symbolic relocations, separately counted.
|
|
|
|
Return -1 on error (malloc failure)
|
|
|
|
Return DW_DLV_OK on success. Any other return indicates
|
|
malloc failed. */
|
|
int
|
|
_dwarf_symbolic_relocs_to_disk(Dwarf_P_Debug dbg,
|
|
Dwarf_Signed * new_sec_count)
|
|
{
|
|
/* unsigned long total_size =0; */
|
|
Dwarf_Small *data = 0;
|
|
int sec_index = 0;
|
|
int res = 0;
|
|
unsigned long i = 0;
|
|
Dwarf_Error error = 0;
|
|
Dwarf_Signed sec_count = 0;
|
|
Dwarf_P_Per_Reloc_Sect p_reloc = &dbg->de_reloc_sect[0];
|
|
|
|
for (i = 0; i < NUM_DEBUG_SECTIONS; ++i, ++p_reloc) {
|
|
unsigned long ct = p_reloc->pr_reloc_total_count;
|
|
struct Dwarf_P_Relocation_Block_s *p_blk;
|
|
struct Dwarf_P_Relocation_Block_s *p_blk_last;
|
|
int err;
|
|
if (ct == 0) {
|
|
continue;
|
|
}
|
|
|
|
/* len = dbg->de_relocation_record_size; */
|
|
++sec_count;
|
|
|
|
/* total_size = ct *len; */
|
|
sec_index = p_reloc->pr_sect_num_of_reloc_sect;
|
|
if (sec_index == 0) {
|
|
/* Call de_callback_func
|
|
getting section number of reloc section. */
|
|
int rel_section_index = 0;
|
|
Dwarf_Unsigned name_idx = 0;
|
|
|
|
/* This is a bit of a fake, as we do not really have true
|
|
elf sections at all. Just the data such might contain.
|
|
But this lets the caller eventually link things
|
|
together: without this call we would not know what rel
|
|
data goes with what section when we are asked for the
|
|
real arrays. */
|
|
|
|
if (dbg->de_callback_func) {
|
|
rel_section_index =
|
|
dbg->de_callback_func(_dwarf_rel_section_names[i],
|
|
dbg->de_relocation_record_size,
|
|
/* type */ SHT_REL,
|
|
/* flags */ 0,
|
|
/* link to symtab, which we cannot
|
|
know */ SHN_UNDEF,
|
|
/* sec rels apply to */
|
|
dbg->de_elf_sects[i],
|
|
&name_idx,
|
|
dbg->de_user_data,&err);
|
|
}
|
|
if (rel_section_index == -1) {
|
|
{
|
|
_dwarf_p_error(dbg, &error, DW_DLE_ELF_SECT_ERR);
|
|
return (DW_DLV_ERROR);
|
|
}
|
|
}
|
|
p_reloc->pr_sect_num_of_reloc_sect = rel_section_index;
|
|
sec_index = rel_section_index;
|
|
}
|
|
|
|
p_blk = p_reloc->pr_first_block;
|
|
|
|
if (p_reloc->pr_block_count > 1) {
|
|
struct Dwarf_P_Relocation_Block_s *new_blk;
|
|
|
|
/* HACK , not normal interfaces, trashing p_reloc current
|
|
contents! */
|
|
_dwarf_reset_reloc_sect_info(p_reloc, ct);
|
|
|
|
/* Creating new single block for all 'ct' entries */
|
|
res = _dwarf_pro_pre_alloc_n_reloc_slots(dbg, (int) i, ct);
|
|
if (res != DW_DLV_OK) {
|
|
return res;
|
|
}
|
|
new_blk = p_reloc->pr_first_block;
|
|
|
|
data = (Dwarf_Small *) new_blk->rb_data;
|
|
|
|
/* The following loop does the consolidation to a single
|
|
block and frees the input block(s). */
|
|
do {
|
|
unsigned long len =
|
|
p_blk->rb_where_to_add_next - p_blk->rb_data;
|
|
memcpy(data, p_blk->rb_data, len);
|
|
data += len;
|
|
p_blk_last = p_blk;
|
|
p_blk = p_blk->rb_next;
|
|
_dwarf_p_dealloc(dbg, (Dwarf_Small *) p_blk_last);
|
|
} while (p_blk);
|
|
/* ASSERT: sum of len copied == total_size */
|
|
new_blk->rb_next_slot_to_use = ct;
|
|
new_blk->rb_where_to_add_next = (char *) data;
|
|
p_reloc->pr_reloc_total_count = ct;
|
|
|
|
/* Have now created a single block, but no change in slots
|
|
used (pr_reloc_total_count) */
|
|
}
|
|
}
|
|
*new_sec_count = 0;
|
|
return DW_DLV_OK;
|
|
}
|